[PATCH] docs: cgroup-v1: replace dead CONFIG_MEM_RES_CTRL_SWAP symbol

[Krzysztof Pawlaczyk]

Commit e55b9f96860f ("mm: memcontrol: drop dead CONFIG_MEMCG_SWAP
config symbol") removed MEMCG_SWAP as it was just a shorthand for
CONFIG_MEMCG && CONFIG_SWAP.

The commit also adjusted the documentation but missed reference to
CONFIG_MEM_RES_CTRL_SWAP, which was the previous name of
CONFIG_MEMCG_SWAP before renaming in commit c255a458055e ("memcg: rename
config variables").

Update the reference to the current state.

Signed-off-by: Krzysztof Pawlaczyk <krzpaw@xxxxxxxxx>
---
 Documentation/admin-guide/cgroup-v1/memcg_test.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/admin-guide/cgroup-v1/memcg_test.rst b/Documentation/admin-guide/cgroup-v1/memcg_test.rst
index a402359abb99..1f128458ddea 100644
--- a/Documentation/admin-guide/cgroup-v1/memcg_test.rst
+++ b/Documentation/admin-guide/cgroup-v1/memcg_test.rst
@@ -62,7 +62,7 @@ Please note that implementation details can be changed.
 
 	At cancel(), simply usage -= PAGE_SIZE.
 
-Under below explanation, we assume CONFIG_MEM_RES_CTRL_SWAP=y.
+Under below explanation, we assume CONFIG_SWAP=y.
 
 4. Anonymous
 ============
-- 
2.25.1